1093 lines
35 KiB
C
1093 lines
35 KiB
C
/**
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* @file vt.h
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*
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* libghostty-vt - Virtual terminal sequence parsing library
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*
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* This library provides functionality for parsing and handling terminal
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* escape sequences as well as maintaining terminal state such as styles,
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* cursor position, screen, scrollback, and more.
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*
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* WARNING: This is an incomplete, work-in-progress API. It is not yet
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* stable and is definitely going to change.
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*/
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/**
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* @mainpage libghostty-vt - Virtual Terminal Sequence Parser
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*
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* libghostty-vt is a C library which implements a modern terminal emulator,
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* extracted from the [Ghostty](https://ghostty.org) terminal emulator.
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*
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* libghostty-vt contains the logic for handling the core parts of a terminal
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* emulator: parsing terminal escape sequences and maintaining terminal state.
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* It can handle scrollback, line wrapping, reflow on resize, and more.
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*
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* @warning This library is currently in development and the API is not yet stable.
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* Breaking changes are expected in future versions. Use with caution in production code.
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*
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* @section groups_sec API Reference
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*
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* The API is organized into the following groups:
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* - @ref key "Key Encoding" - Encode key events into terminal sequences
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* - @ref osc "OSC Parser" - Parse OSC (Operating System Command) sequences
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* - @ref allocator "Memory Management" - Memory management and custom allocators
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*
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*/
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#ifndef GHOSTTY_VT_H
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#define GHOSTTY_VT_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdint.h>
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//-------------------------------------------------------------------
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// Types
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/**
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* Opaque handle to an OSC parser instance.
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*
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* This handle represents an OSC (Operating System Command) parser that can
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* be used to parse the contents of OSC sequences. This isn't a full VT
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* parser; it is only the OSC parser component. This is useful if you have
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* a parser already and want to only extract and handle OSC sequences.
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*
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* @ingroup osc
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*/
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typedef struct GhosttyOscParser *GhosttyOscParser;
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/**
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* Opaque handle to a single OSC command.
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*
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* This handle represents a parsed OSC (Operating System Command) command.
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* The command can be queried for its type and associated data using
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* `ghostty_osc_command_type` and `ghostty_osc_command_data`.
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*
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* @ingroup osc
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*/
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typedef struct GhosttyOscCommand *GhosttyOscCommand;
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/**
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* Result codes for libghostty-vt operations.
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*/
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typedef enum {
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/** Operation completed successfully */
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GHOSTTY_SUCCESS = 0,
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/** Operation failed due to failed allocation */
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GHOSTTY_OUT_OF_MEMORY = -1,
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} GhosttyResult;
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/**
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* OSC command types.
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*
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* @ingroup osc
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*/
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typedef enum {
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GHOSTTY_OSC_COMMAND_INVALID = 0,
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GHOSTTY_OSC_COMMAND_CHANGE_WINDOW_TITLE = 1,
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GHOSTTY_OSC_COMMAND_CHANGE_WINDOW_ICON = 2,
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GHOSTTY_OSC_COMMAND_PROMPT_START = 3,
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GHOSTTY_OSC_COMMAND_PROMPT_END = 4,
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GHOSTTY_OSC_COMMAND_END_OF_INPUT = 5,
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GHOSTTY_OSC_COMMAND_END_OF_COMMAND = 6,
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GHOSTTY_OSC_COMMAND_CLIPBOARD_CONTENTS = 7,
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GHOSTTY_OSC_COMMAND_REPORT_PWD = 8,
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GHOSTTY_OSC_COMMAND_MOUSE_SHAPE = 9,
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GHOSTTY_OSC_COMMAND_COLOR_OPERATION = 10,
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GHOSTTY_OSC_COMMAND_KITTY_COLOR_PROTOCOL = 11,
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GHOSTTY_OSC_COMMAND_SHOW_DESKTOP_NOTIFICATION = 12,
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GHOSTTY_OSC_COMMAND_HYPERLINK_START = 13,
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GHOSTTY_OSC_COMMAND_HYPERLINK_END = 14,
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GHOSTTY_OSC_COMMAND_CONEMU_SLEEP = 15,
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GHOSTTY_OSC_COMMAND_CONEMU_SHOW_MESSAGE_BOX = 16,
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GHOSTTY_OSC_COMMAND_CONEMU_CHANGE_TAB_TITLE = 17,
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GHOSTTY_OSC_COMMAND_CONEMU_PROGRESS_REPORT = 18,
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GHOSTTY_OSC_COMMAND_CONEMU_WAIT_INPUT = 19,
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GHOSTTY_OSC_COMMAND_CONEMU_GUIMACRO = 20,
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} GhosttyOscCommandType;
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/**
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* OSC command data types.
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*
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* These values specify what type of data to extract from an OSC command
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* using `ghostty_osc_command_data`.
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*
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* @ingroup osc
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*/
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typedef enum {
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/** Invalid data type. Never results in any data extraction. */
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GHOSTTY_OSC_DATA_INVALID = 0,
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/**
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* Window title string data.
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*
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* Valid for: GHOSTTY_OSC_COMMAND_CHANGE_WINDOW_TITLE
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*
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* Output type: const char ** (pointer to null-terminated string)
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*
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* Lifetime: Valid until the next call to any ghostty_osc_* function with
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* the same parser instance. Memory is owned by the parser.
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*/
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GHOSTTY_OSC_DATA_CHANGE_WINDOW_TITLE_STR = 1,
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} GhosttyOscCommandData;
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//-------------------------------------------------------------------
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// Allocator Interface
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/** @defgroup allocator Memory Management
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*
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* libghostty-vt does require memory allocation for various operations,
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* but is resilient to allocation failures and will gracefully handle
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* out-of-memory situations by returning error codes.
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*
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* The exact memory management semantics are documented in the relevant
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* functions and data structures.
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*
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* libghostty-vt uses explicit memory allocation via an allocator
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* interface provided by GhosttyAllocator. The interface is based on the
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* [Zig](https://ziglang.org) allocator interface, since this has been
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* shown to be a flexible and powerful interface in practice and enables
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* a wide variety of allocation strategies.
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*
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* **For the common case, you can pass NULL as the allocator for any
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* function that accepts one,** and libghostty will use a default allocator.
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* The default allocator will be libc malloc/free if libc is linked.
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* Otherwise, a custom allocator is used (currently Zig's SMP allocator)
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* that doesn't require any external dependencies.
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*
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* ## Basic Usage
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*
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* For simple use cases, you can ignore this interface entirely by passing NULL
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* as the allocator parameter to functions that accept one. This will use the
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* default allocator (typically libc malloc/free, if libc is linked, but
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* we provide our own default allocator if libc isn't linked).
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*
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* To use a custom allocator:
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* 1. Implement the GhosttyAllocatorVtable function pointers
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* 2. Create a GhosttyAllocator struct with your vtable and context
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* 3. Pass the allocator to functions that accept one
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*
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* @{
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*/
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/**
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* Function table for custom memory allocator operations.
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*
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* This vtable defines the interface for a custom memory allocator. All
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* function pointers must be valid and non-NULL.
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*
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* @ingroup allocator
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*
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* If you're not going to use a custom allocator, you can ignore all of
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* this. All functions that take an allocator pointer allow NULL to use a
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* default allocator.
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*
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* The interface is based on the Zig allocator interface. I'll say up front
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* that it is easy to look at this interface and think "wow, this is really
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* overcomplicated". The reason for this complexity is well thought out by
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* the Zig folks, and it enables a diverse set of allocation strategies
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* as shown by the Zig ecosystem. As a consolation, please note that many
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* of the arguments are only needed for advanced use cases and can be
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* safely ignored in simple implementations. For example, if you look at
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* the Zig implementation of the libc allocator in `lib/std/heap.zig`
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* (search for CAllocator), you'll see it is very simple.
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*
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* We chose to align with the Zig allocator interface because:
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*
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* 1. It is a proven interface that serves a wide variety of use cases
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* in the real world via the Zig ecosystem. It's shown to work.
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*
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* 2. Our core implementation itself is Zig, and this lets us very
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* cheaply and easily convert between C and Zig allocators.
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*
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* NOTE(mitchellh): In the future, we can have default implementations of
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* resize/remap and allow those to be null.
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*/
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typedef struct {
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/**
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* Return a pointer to `len` bytes with specified `alignment`, or return
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* `NULL` indicating the allocation failed.
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*
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* @param ctx The allocator context
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* @param len Number of bytes to allocate
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* @param alignment Required alignment for the allocation. Guaranteed to
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* be a power of two between 1 and 16 inclusive.
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* @param ret_addr First return address of the allocation call stack (0 if not provided)
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* @return Pointer to allocated memory, or NULL if allocation failed
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*/
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void* (*alloc)(void *ctx, size_t len, uint8_t alignment, uintptr_t ret_addr);
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/**
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* Attempt to expand or shrink memory in place.
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*
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* `memory_len` must equal the length requested from the most recent
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* successful call to `alloc`, `resize`, or `remap`. `alignment` must
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* equal the same value that was passed as the `alignment` parameter to
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* the original `alloc` call.
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*
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* `new_len` must be greater than zero.
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*
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* @param ctx The allocator context
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* @param memory Pointer to the memory block to resize
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* @param memory_len Current size of the memory block
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* @param alignment Alignment (must match original allocation)
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* @param new_len New requested size
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* @param ret_addr First return address of the allocation call stack (0 if not provided)
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* @return true if resize was successful in-place, false if relocation would be required
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*/
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bool (*resize)(void *ctx, void *memory, size_t memory_len, uint8_t alignment, size_t new_len, uintptr_t ret_addr);
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/**
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* Attempt to expand or shrink memory, allowing relocation.
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*
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* `memory_len` must equal the length requested from the most recent
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* successful call to `alloc`, `resize`, or `remap`. `alignment` must
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* equal the same value that was passed as the `alignment` parameter to
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* the original `alloc` call.
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*
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* A non-`NULL` return value indicates the resize was successful. The
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* allocation may have same address, or may have been relocated. In either
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* case, the allocation now has size of `new_len`. A `NULL` return value
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* indicates that the resize would be equivalent to allocating new memory,
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* copying the bytes from the old memory, and then freeing the old memory.
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* In such case, it is more efficient for the caller to perform the copy.
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*
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* `new_len` must be greater than zero.
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*
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* @param ctx The allocator context
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* @param memory Pointer to the memory block to remap
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* @param memory_len Current size of the memory block
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* @param alignment Alignment (must match original allocation)
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* @param new_len New requested size
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* @param ret_addr First return address of the allocation call stack (0 if not provided)
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* @return Pointer to resized memory (may be relocated), or NULL if manual copy is needed
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*/
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void* (*remap)(void *ctx, void *memory, size_t memory_len, uint8_t alignment, size_t new_len, uintptr_t ret_addr);
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/**
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* Free and invalidate a region of memory.
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*
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* `memory_len` must equal the length requested from the most recent
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* successful call to `alloc`, `resize`, or `remap`. `alignment` must
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* equal the same value that was passed as the `alignment` parameter to
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* the original `alloc` call.
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*
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* @param ctx The allocator context
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* @param memory Pointer to the memory block to free
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* @param memory_len Size of the memory block
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* @param alignment Alignment (must match original allocation)
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* @param ret_addr First return address of the allocation call stack (0 if not provided)
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*/
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void (*free)(void *ctx, void *memory, size_t memory_len, uint8_t alignment, uintptr_t ret_addr);
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} GhosttyAllocatorVtable;
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/**
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* Custom memory allocator.
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*
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* For functions that take an allocator pointer, a NULL pointer indicates
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* that the default allocator should be used. The default allocator will
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* be libc malloc/free if we're linking to libc. If libc isn't linked,
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* a custom allocator is used (currently Zig's SMP allocator).
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*
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* @ingroup allocator
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*
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* Usage example:
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* @code
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* GhosttyAllocator allocator = {
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* .vtable = &my_allocator_vtable,
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* .ctx = my_allocator_state
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* };
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* @endcode
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*/
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typedef struct {
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/**
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* Opaque context pointer passed to all vtable functions.
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* This allows the allocator implementation to maintain state
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* or reference external resources needed for memory management.
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*/
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void *ctx;
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/**
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* Pointer to the allocator's vtable containing function pointers
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* for memory operations (alloc, resize, remap, free).
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*/
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const GhosttyAllocatorVtable *vtable;
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} GhosttyAllocator;
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/** @} */ // end of allocator group
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//-------------------------------------------------------------------
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// Key Encoding
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/** @defgroup key Key Encoding
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*
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* Utilities for encoding key events into terminal escape sequences,
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* supporting both legacy encoding as well as Kitty Keyboard Protocol.
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*
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* @{
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*/
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/**
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* Opaque handle to a key event.
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*
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* This handle represents a keyboard input event containing information about
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* the physical key pressed, modifiers, and generated text. The event can be
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* configured using the `ghostty_key_event_set_*` functions.
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*
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* @ingroup key
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*/
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typedef struct GhosttyKeyEvent *GhosttyKeyEvent;
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/**
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* Keyboard input event types.
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*
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* @ingroup key
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*/
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typedef enum {
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/** Key was released */
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GHOSTTY_KEY_ACTION_RELEASE = 0,
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/** Key was pressed */
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GHOSTTY_KEY_ACTION_PRESS = 1,
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/** Key is being repeated (held down) */
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GHOSTTY_KEY_ACTION_REPEAT = 2,
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} GhosttyKeyAction;
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/**
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* Keyboard modifier keys bitmask.
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*
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* A bitmask representing all keyboard modifiers. This tracks which modifier keys
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* are pressed and, where supported by the platform, which side (left or right)
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* of each modifier is active.
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*
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* Use the GHOSTTY_MODS_* constants to test and set individual modifiers.
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*
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* Modifier side bits are only meaningful when the corresponding modifier bit is set.
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* Not all platforms support distinguishing between left and right modifier
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* keys and Ghostty is built to expect that some platforms may not provide this
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* information.
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*
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* @ingroup key
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*/
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typedef uint16_t GhosttyMods;
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/** Shift key is pressed */
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#define GHOSTTY_MODS_SHIFT (1 << 0)
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/** Control key is pressed */
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#define GHOSTTY_MODS_CTRL (1 << 1)
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/** Alt/Option key is pressed */
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#define GHOSTTY_MODS_ALT (1 << 2)
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/** Super/Command/Windows key is pressed */
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#define GHOSTTY_MODS_SUPER (1 << 3)
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/** Caps Lock is active */
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#define GHOSTTY_MODS_CAPS_LOCK (1 << 4)
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/** Num Lock is active */
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#define GHOSTTY_MODS_NUM_LOCK (1 << 5)
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/**
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* Right shift is pressed (0 = left, 1 = right).
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* Only meaningful when GHOSTTY_MODS_SHIFT is set.
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*/
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#define GHOSTTY_MODS_SHIFT_SIDE (1 << 6)
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/**
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* Right ctrl is pressed (0 = left, 1 = right).
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* Only meaningful when GHOSTTY_MODS_CTRL is set.
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*/
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#define GHOSTTY_MODS_CTRL_SIDE (1 << 7)
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/**
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* Right alt is pressed (0 = left, 1 = right).
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* Only meaningful when GHOSTTY_MODS_ALT is set.
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*/
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#define GHOSTTY_MODS_ALT_SIDE (1 << 8)
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/**
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* Right super is pressed (0 = left, 1 = right).
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* Only meaningful when GHOSTTY_MODS_SUPER is set.
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*/
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#define GHOSTTY_MODS_SUPER_SIDE (1 << 9)
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|
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/**
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* Physical key codes.
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*
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* The set of key codes that Ghostty is aware of. These represent physical keys
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* on the keyboard and are layout-independent. For example, the "a" key on a US
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* keyboard is the same as the "ф" key on a Russian keyboard, but both will
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* report the same key_a value.
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*
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|
* Layout-dependent strings are provided separately as UTF-8 text and are produced
|
|
* by the platform. These values are based on the W3C UI Events KeyboardEvent code
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|
* standard. See: https://www.w3.org/TR/uievents-code
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*
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* @ingroup key
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*/
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typedef enum {
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GHOSTTY_KEY_UNIDENTIFIED = 0,
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|
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// Writing System Keys (W3C § 3.1.1)
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GHOSTTY_KEY_BACKQUOTE,
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GHOSTTY_KEY_BACKSLASH,
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GHOSTTY_KEY_BRACKET_LEFT,
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GHOSTTY_KEY_BRACKET_RIGHT,
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GHOSTTY_KEY_COMMA,
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GHOSTTY_KEY_DIGIT_0,
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GHOSTTY_KEY_DIGIT_1,
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GHOSTTY_KEY_DIGIT_2,
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GHOSTTY_KEY_DIGIT_3,
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GHOSTTY_KEY_DIGIT_4,
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GHOSTTY_KEY_DIGIT_5,
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GHOSTTY_KEY_DIGIT_6,
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GHOSTTY_KEY_DIGIT_7,
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GHOSTTY_KEY_DIGIT_8,
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GHOSTTY_KEY_DIGIT_9,
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GHOSTTY_KEY_EQUAL,
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GHOSTTY_KEY_INTL_BACKSLASH,
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GHOSTTY_KEY_INTL_RO,
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GHOSTTY_KEY_INTL_YEN,
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GHOSTTY_KEY_A,
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GHOSTTY_KEY_B,
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GHOSTTY_KEY_C,
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GHOSTTY_KEY_D,
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GHOSTTY_KEY_E,
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GHOSTTY_KEY_F,
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GHOSTTY_KEY_G,
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GHOSTTY_KEY_H,
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GHOSTTY_KEY_I,
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GHOSTTY_KEY_J,
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GHOSTTY_KEY_K,
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GHOSTTY_KEY_L,
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GHOSTTY_KEY_M,
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GHOSTTY_KEY_N,
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GHOSTTY_KEY_O,
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GHOSTTY_KEY_P,
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GHOSTTY_KEY_Q,
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GHOSTTY_KEY_R,
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GHOSTTY_KEY_S,
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GHOSTTY_KEY_T,
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GHOSTTY_KEY_U,
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GHOSTTY_KEY_V,
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GHOSTTY_KEY_W,
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GHOSTTY_KEY_X,
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GHOSTTY_KEY_Y,
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GHOSTTY_KEY_Z,
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GHOSTTY_KEY_MINUS,
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GHOSTTY_KEY_PERIOD,
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GHOSTTY_KEY_QUOTE,
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GHOSTTY_KEY_SEMICOLON,
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GHOSTTY_KEY_SLASH,
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|
|
|
// Functional Keys (W3C § 3.1.2)
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|
GHOSTTY_KEY_ALT_LEFT,
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GHOSTTY_KEY_ALT_RIGHT,
|
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GHOSTTY_KEY_BACKSPACE,
|
|
GHOSTTY_KEY_CAPS_LOCK,
|
|
GHOSTTY_KEY_CONTEXT_MENU,
|
|
GHOSTTY_KEY_CONTROL_LEFT,
|
|
GHOSTTY_KEY_CONTROL_RIGHT,
|
|
GHOSTTY_KEY_ENTER,
|
|
GHOSTTY_KEY_META_LEFT,
|
|
GHOSTTY_KEY_META_RIGHT,
|
|
GHOSTTY_KEY_SHIFT_LEFT,
|
|
GHOSTTY_KEY_SHIFT_RIGHT,
|
|
GHOSTTY_KEY_SPACE,
|
|
GHOSTTY_KEY_TAB,
|
|
GHOSTTY_KEY_CONVERT,
|
|
GHOSTTY_KEY_KANA_MODE,
|
|
GHOSTTY_KEY_NON_CONVERT,
|
|
|
|
// Control Pad Section (W3C § 3.2)
|
|
GHOSTTY_KEY_DELETE,
|
|
GHOSTTY_KEY_END,
|
|
GHOSTTY_KEY_HELP,
|
|
GHOSTTY_KEY_HOME,
|
|
GHOSTTY_KEY_INSERT,
|
|
GHOSTTY_KEY_PAGE_DOWN,
|
|
GHOSTTY_KEY_PAGE_UP,
|
|
|
|
// Arrow Pad Section (W3C § 3.3)
|
|
GHOSTTY_KEY_ARROW_DOWN,
|
|
GHOSTTY_KEY_ARROW_LEFT,
|
|
GHOSTTY_KEY_ARROW_RIGHT,
|
|
GHOSTTY_KEY_ARROW_UP,
|
|
|
|
// Numpad Section (W3C § 3.4)
|
|
GHOSTTY_KEY_NUM_LOCK,
|
|
GHOSTTY_KEY_NUMPAD_0,
|
|
GHOSTTY_KEY_NUMPAD_1,
|
|
GHOSTTY_KEY_NUMPAD_2,
|
|
GHOSTTY_KEY_NUMPAD_3,
|
|
GHOSTTY_KEY_NUMPAD_4,
|
|
GHOSTTY_KEY_NUMPAD_5,
|
|
GHOSTTY_KEY_NUMPAD_6,
|
|
GHOSTTY_KEY_NUMPAD_7,
|
|
GHOSTTY_KEY_NUMPAD_8,
|
|
GHOSTTY_KEY_NUMPAD_9,
|
|
GHOSTTY_KEY_NUMPAD_ADD,
|
|
GHOSTTY_KEY_NUMPAD_BACKSPACE,
|
|
GHOSTTY_KEY_NUMPAD_CLEAR,
|
|
GHOSTTY_KEY_NUMPAD_CLEAR_ENTRY,
|
|
GHOSTTY_KEY_NUMPAD_COMMA,
|
|
GHOSTTY_KEY_NUMPAD_DECIMAL,
|
|
GHOSTTY_KEY_NUMPAD_DIVIDE,
|
|
GHOSTTY_KEY_NUMPAD_ENTER,
|
|
GHOSTTY_KEY_NUMPAD_EQUAL,
|
|
GHOSTTY_KEY_NUMPAD_MEMORY_ADD,
|
|
GHOSTTY_KEY_NUMPAD_MEMORY_CLEAR,
|
|
GHOSTTY_KEY_NUMPAD_MEMORY_RECALL,
|
|
GHOSTTY_KEY_NUMPAD_MEMORY_STORE,
|
|
GHOSTTY_KEY_NUMPAD_MEMORY_SUBTRACT,
|
|
GHOSTTY_KEY_NUMPAD_MULTIPLY,
|
|
GHOSTTY_KEY_NUMPAD_PAREN_LEFT,
|
|
GHOSTTY_KEY_NUMPAD_PAREN_RIGHT,
|
|
GHOSTTY_KEY_NUMPAD_SUBTRACT,
|
|
GHOSTTY_KEY_NUMPAD_SEPARATOR,
|
|
GHOSTTY_KEY_NUMPAD_UP,
|
|
GHOSTTY_KEY_NUMPAD_DOWN,
|
|
GHOSTTY_KEY_NUMPAD_RIGHT,
|
|
GHOSTTY_KEY_NUMPAD_LEFT,
|
|
GHOSTTY_KEY_NUMPAD_BEGIN,
|
|
GHOSTTY_KEY_NUMPAD_HOME,
|
|
GHOSTTY_KEY_NUMPAD_END,
|
|
GHOSTTY_KEY_NUMPAD_INSERT,
|
|
GHOSTTY_KEY_NUMPAD_DELETE,
|
|
GHOSTTY_KEY_NUMPAD_PAGE_UP,
|
|
GHOSTTY_KEY_NUMPAD_PAGE_DOWN,
|
|
|
|
// Function Section (W3C § 3.5)
|
|
GHOSTTY_KEY_ESCAPE,
|
|
GHOSTTY_KEY_F1,
|
|
GHOSTTY_KEY_F2,
|
|
GHOSTTY_KEY_F3,
|
|
GHOSTTY_KEY_F4,
|
|
GHOSTTY_KEY_F5,
|
|
GHOSTTY_KEY_F6,
|
|
GHOSTTY_KEY_F7,
|
|
GHOSTTY_KEY_F8,
|
|
GHOSTTY_KEY_F9,
|
|
GHOSTTY_KEY_F10,
|
|
GHOSTTY_KEY_F11,
|
|
GHOSTTY_KEY_F12,
|
|
GHOSTTY_KEY_F13,
|
|
GHOSTTY_KEY_F14,
|
|
GHOSTTY_KEY_F15,
|
|
GHOSTTY_KEY_F16,
|
|
GHOSTTY_KEY_F17,
|
|
GHOSTTY_KEY_F18,
|
|
GHOSTTY_KEY_F19,
|
|
GHOSTTY_KEY_F20,
|
|
GHOSTTY_KEY_F21,
|
|
GHOSTTY_KEY_F22,
|
|
GHOSTTY_KEY_F23,
|
|
GHOSTTY_KEY_F24,
|
|
GHOSTTY_KEY_F25,
|
|
GHOSTTY_KEY_FN,
|
|
GHOSTTY_KEY_FN_LOCK,
|
|
GHOSTTY_KEY_PRINT_SCREEN,
|
|
GHOSTTY_KEY_SCROLL_LOCK,
|
|
GHOSTTY_KEY_PAUSE,
|
|
|
|
// Media Keys (W3C § 3.6)
|
|
GHOSTTY_KEY_BROWSER_BACK,
|
|
GHOSTTY_KEY_BROWSER_FAVORITES,
|
|
GHOSTTY_KEY_BROWSER_FORWARD,
|
|
GHOSTTY_KEY_BROWSER_HOME,
|
|
GHOSTTY_KEY_BROWSER_REFRESH,
|
|
GHOSTTY_KEY_BROWSER_SEARCH,
|
|
GHOSTTY_KEY_BROWSER_STOP,
|
|
GHOSTTY_KEY_EJECT,
|
|
GHOSTTY_KEY_LAUNCH_APP_1,
|
|
GHOSTTY_KEY_LAUNCH_APP_2,
|
|
GHOSTTY_KEY_LAUNCH_MAIL,
|
|
GHOSTTY_KEY_MEDIA_PLAY_PAUSE,
|
|
GHOSTTY_KEY_MEDIA_SELECT,
|
|
GHOSTTY_KEY_MEDIA_STOP,
|
|
GHOSTTY_KEY_MEDIA_TRACK_NEXT,
|
|
GHOSTTY_KEY_MEDIA_TRACK_PREVIOUS,
|
|
GHOSTTY_KEY_POWER,
|
|
GHOSTTY_KEY_SLEEP,
|
|
GHOSTTY_KEY_AUDIO_VOLUME_DOWN,
|
|
GHOSTTY_KEY_AUDIO_VOLUME_MUTE,
|
|
GHOSTTY_KEY_AUDIO_VOLUME_UP,
|
|
GHOSTTY_KEY_WAKE_UP,
|
|
|
|
// Legacy, Non-standard, and Special Keys (W3C § 3.7)
|
|
GHOSTTY_KEY_COPY,
|
|
GHOSTTY_KEY_CUT,
|
|
GHOSTTY_KEY_PASTE,
|
|
} GhosttyKey;
|
|
|
|
/**
|
|
* Kitty keyboard protocol flags.
|
|
*
|
|
* Bitflags representing the various modes of the Kitty keyboard protocol.
|
|
* These can be combined using bitwise OR operations. Valid values all
|
|
* start with `GHOSTTY_KITTY_KEY_`.
|
|
*
|
|
* @ingroup key
|
|
*/
|
|
typedef uint8_t GhosttyKittyKeyFlags;
|
|
|
|
/** Kitty keyboard protocol disabled (all flags off) */
|
|
#define GHOSTTY_KITTY_KEY_DISABLED 0
|
|
|
|
/** Disambiguate escape codes */
|
|
#define GHOSTTY_KITTY_KEY_DISAMBIGUATE (1 << 0)
|
|
|
|
/** Report key press and release events */
|
|
#define GHOSTTY_KITTY_KEY_REPORT_EVENTS (1 << 1)
|
|
|
|
/** Report alternate key codes */
|
|
#define GHOSTTY_KITTY_KEY_REPORT_ALTERNATES (1 << 2)
|
|
|
|
/** Report all key events including those normally handled by the terminal */
|
|
#define GHOSTTY_KITTY_KEY_REPORT_ALL (1 << 3)
|
|
|
|
/** Report associated text with key events */
|
|
#define GHOSTTY_KITTY_KEY_REPORT_ASSOCIATED (1 << 4)
|
|
|
|
/** All Kitty keyboard protocol flags enabled */
|
|
#define GHOSTTY_KITTY_KEY_ALL (GHOSTTY_KITTY_KEY_DISAMBIGUATE | GHOSTTY_KITTY_KEY_REPORT_EVENTS | GHOSTTY_KITTY_KEY_REPORT_ALTERNATES | GHOSTTY_KITTY_KEY_REPORT_ALL | GHOSTTY_KITTY_KEY_REPORT_ASSOCIATED)
|
|
|
|
/**
|
|
* macOS option key behavior.
|
|
*
|
|
* Determines whether the "option" key on macOS is treated as "alt" or not.
|
|
* See the Ghostty `macos-option-as-alt` configuration option for more details.
|
|
*
|
|
* @ingroup key
|
|
*/
|
|
typedef enum {
|
|
/** Option key is not treated as alt */
|
|
GHOSTTY_OPTION_AS_ALT_FALSE = 0,
|
|
/** Option key is treated as alt */
|
|
GHOSTTY_OPTION_AS_ALT_TRUE = 1,
|
|
/** Only left option key is treated as alt */
|
|
GHOSTTY_OPTION_AS_ALT_LEFT = 2,
|
|
/** Only right option key is treated as alt */
|
|
GHOSTTY_OPTION_AS_ALT_RIGHT = 3,
|
|
} GhosttyOptionAsAlt;
|
|
|
|
/**
|
|
* Create a new key event instance.
|
|
*
|
|
* Creates a new key event with default values. The event must be freed using
|
|
* ghostty_key_event_free() when no longer needed.
|
|
*
|
|
* @param allocator Pointer to the allocator to use for memory management, or NULL to use the default allocator
|
|
* @param event Pointer to store the created key event handle
|
|
* @return GHOSTTY_SUCCESS on success, or an error code on failure
|
|
*
|
|
* @ingroup key
|
|
*/
|
|
GhosttyResult ghostty_key_event_new(const GhosttyAllocator *allocator, GhosttyKeyEvent *event);
|
|
|
|
/**
|
|
* Free a key event instance.
|
|
*
|
|
* Releases all resources associated with the key event. After this call,
|
|
* the event handle becomes invalid and must not be used.
|
|
*
|
|
* @param event The key event handle to free (may be NULL)
|
|
*
|
|
* @ingroup key
|
|
*/
|
|
void ghostty_key_event_free(GhosttyKeyEvent event);
|
|
|
|
/**
|
|
* Set the key action (press, release, repeat).
|
|
*
|
|
* @param event The key event handle, must not be NULL
|
|
* @param action The action to set
|
|
*
|
|
* @ingroup key
|
|
*/
|
|
void ghostty_key_event_set_action(GhosttyKeyEvent event, GhosttyKeyAction action);
|
|
|
|
/**
|
|
* Get the key action (press, release, repeat).
|
|
*
|
|
* @param event The key event handle, must not be NULL
|
|
* @return The key action
|
|
*
|
|
* @ingroup key
|
|
*/
|
|
GhosttyKeyAction ghostty_key_event_get_action(GhosttyKeyEvent event);
|
|
|
|
/**
|
|
* Set the physical key code.
|
|
*
|
|
* @param event The key event handle, must not be NULL
|
|
* @param key The physical key code to set
|
|
*
|
|
* @ingroup key
|
|
*/
|
|
void ghostty_key_event_set_key(GhosttyKeyEvent event, GhosttyKey key);
|
|
|
|
/**
|
|
* Get the physical key code.
|
|
*
|
|
* @param event The key event handle, must not be NULL
|
|
* @return The physical key code
|
|
*
|
|
* @ingroup key
|
|
*/
|
|
GhosttyKey ghostty_key_event_get_key(GhosttyKeyEvent event);
|
|
|
|
/**
|
|
* Set the modifier keys bitmask.
|
|
*
|
|
* @param event The key event handle, must not be NULL
|
|
* @param mods The modifier keys bitmask to set
|
|
*
|
|
* @ingroup key
|
|
*/
|
|
void ghostty_key_event_set_mods(GhosttyKeyEvent event, GhosttyMods mods);
|
|
|
|
/**
|
|
* Get the modifier keys bitmask.
|
|
*
|
|
* @param event The key event handle, must not be NULL
|
|
* @return The modifier keys bitmask
|
|
*
|
|
* @ingroup key
|
|
*/
|
|
GhosttyMods ghostty_key_event_get_mods(GhosttyKeyEvent event);
|
|
|
|
/**
|
|
* Set the consumed modifiers bitmask.
|
|
*
|
|
* @param event The key event handle, must not be NULL
|
|
* @param consumed_mods The consumed modifiers bitmask to set
|
|
*
|
|
* @ingroup key
|
|
*/
|
|
void ghostty_key_event_set_consumed_mods(GhosttyKeyEvent event, GhosttyMods consumed_mods);
|
|
|
|
/**
|
|
* Get the consumed modifiers bitmask.
|
|
*
|
|
* @param event The key event handle, must not be NULL
|
|
* @return The consumed modifiers bitmask
|
|
*
|
|
* @ingroup key
|
|
*/
|
|
GhosttyMods ghostty_key_event_get_consumed_mods(GhosttyKeyEvent event);
|
|
|
|
/**
|
|
* Set whether the key event is part of a composition sequence.
|
|
*
|
|
* @param event The key event handle, must not be NULL
|
|
* @param composing Whether the key event is part of a composition sequence
|
|
*
|
|
* @ingroup key
|
|
*/
|
|
void ghostty_key_event_set_composing(GhosttyKeyEvent event, bool composing);
|
|
|
|
/**
|
|
* Get whether the key event is part of a composition sequence.
|
|
*
|
|
* @param event The key event handle, must not be NULL
|
|
* @return Whether the key event is part of a composition sequence
|
|
*
|
|
* @ingroup key
|
|
*/
|
|
bool ghostty_key_event_get_composing(GhosttyKeyEvent event);
|
|
|
|
/**
|
|
* Set the UTF-8 text generated by the key event.
|
|
*
|
|
* The key event does NOT take ownership of the text pointer. The caller
|
|
* must ensure the string remains valid for the lifetime needed by the event.
|
|
*
|
|
* @param event The key event handle, must not be NULL
|
|
* @param utf8 The UTF-8 text to set (or NULL for empty)
|
|
* @param len Length of the UTF-8 text in bytes
|
|
*
|
|
* @ingroup key
|
|
*/
|
|
void ghostty_key_event_set_utf8(GhosttyKeyEvent event, const char *utf8, size_t len);
|
|
|
|
/**
|
|
* Get the UTF-8 text generated by the key event.
|
|
*
|
|
* The returned pointer is valid until the event is freed or the UTF-8 text is modified.
|
|
*
|
|
* @param event The key event handle, must not be NULL
|
|
* @param len Pointer to store the length of the UTF-8 text in bytes (may be NULL)
|
|
* @return The UTF-8 text (or NULL for empty)
|
|
*
|
|
* @ingroup key
|
|
*/
|
|
const char *ghostty_key_event_get_utf8(GhosttyKeyEvent event, size_t *len);
|
|
|
|
/**
|
|
* Set the unshifted Unicode codepoint.
|
|
*
|
|
* @param event The key event handle, must not be NULL
|
|
* @param codepoint The unshifted Unicode codepoint to set
|
|
*
|
|
* @ingroup key
|
|
*/
|
|
void ghostty_key_event_set_unshifted_codepoint(GhosttyKeyEvent event, uint32_t codepoint);
|
|
|
|
/**
|
|
* Get the unshifted Unicode codepoint.
|
|
*
|
|
* @param event The key event handle, must not be NULL
|
|
* @return The unshifted Unicode codepoint
|
|
*
|
|
* @ingroup key
|
|
*/
|
|
uint32_t ghostty_key_event_get_unshifted_codepoint(GhosttyKeyEvent event);
|
|
|
|
/**
|
|
* Opaque handle to a key encoder instance.
|
|
*
|
|
* This handle represents a key encoder that converts key events into terminal
|
|
* escape sequences. The encoder supports both legacy encoding and the Kitty
|
|
* Keyboard Protocol, depending on the options set.
|
|
*
|
|
* @ingroup key
|
|
*/
|
|
typedef struct GhosttyKeyEncoder *GhosttyKeyEncoder;
|
|
|
|
/**
|
|
* Key encoder option identifiers.
|
|
*
|
|
* These values are used with ghostty_key_encoder_setopt() to configure
|
|
* the behavior of the key encoder.
|
|
*
|
|
* @ingroup key
|
|
*/
|
|
typedef enum {
|
|
/** Terminal DEC mode 1: cursor key application mode (value: bool) */
|
|
GHOSTTY_KEY_ENCODER_OPT_CURSOR_KEY_APPLICATION = 0,
|
|
|
|
/** Terminal DEC mode 66: keypad key application mode (value: bool) */
|
|
GHOSTTY_KEY_ENCODER_OPT_KEYPAD_KEY_APPLICATION = 1,
|
|
|
|
/** Terminal DEC mode 1035: ignore keypad with numlock (value: bool) */
|
|
GHOSTTY_KEY_ENCODER_OPT_IGNORE_KEYPAD_WITH_NUMLOCK = 2,
|
|
|
|
/** Terminal DEC mode 1036: alt sends escape prefix (value: bool) */
|
|
GHOSTTY_KEY_ENCODER_OPT_ALT_ESC_PREFIX = 3,
|
|
|
|
/** xterm modifyOtherKeys mode 2 (value: bool) */
|
|
GHOSTTY_KEY_ENCODER_OPT_MODIFY_OTHER_KEYS_STATE_2 = 4,
|
|
|
|
/** Kitty keyboard protocol flags (value: GhosttyKittyKeyFlags bitmask) */
|
|
GHOSTTY_KEY_ENCODER_OPT_KITTY_FLAGS = 5,
|
|
|
|
/** macOS option-as-alt setting (value: GhosttyOptionAsAlt) */
|
|
GHOSTTY_KEY_ENCODER_OPT_MACOS_OPTION_AS_ALT = 6,
|
|
} GhosttyKeyEncoderOption;
|
|
|
|
/**
|
|
* Create a new key encoder instance.
|
|
*
|
|
* Creates a new key encoder with default options. The encoder can be configured
|
|
* using ghostty_key_encoder_setopt() and must be freed using
|
|
* ghostty_key_encoder_free() when no longer needed.
|
|
*
|
|
* @param allocator Pointer to the allocator to use for memory management, or NULL to use the default allocator
|
|
* @param encoder Pointer to store the created encoder handle
|
|
* @return GHOSTTY_SUCCESS on success, or an error code on failure
|
|
*
|
|
* @ingroup key
|
|
*/
|
|
GhosttyResult ghostty_key_encoder_new(const GhosttyAllocator *allocator, GhosttyKeyEncoder *encoder);
|
|
|
|
/**
|
|
* Free a key encoder instance.
|
|
*
|
|
* Releases all resources associated with the key encoder. After this call,
|
|
* the encoder handle becomes invalid and must not be used.
|
|
*
|
|
* @param encoder The encoder handle to free (may be NULL)
|
|
*
|
|
* @ingroup key
|
|
*/
|
|
void ghostty_key_encoder_free(GhosttyKeyEncoder encoder);
|
|
|
|
/**
|
|
* Set an option on the key encoder.
|
|
*
|
|
* Configures the behavior of the key encoder. Options control various aspects
|
|
* of encoding such as terminal modes (cursor key application mode, keypad mode),
|
|
* protocol selection (Kitty keyboard protocol flags), and platform-specific
|
|
* behaviors (macOS option-as-alt).
|
|
*
|
|
* A null pointer value does nothing. It does not reset the value to the
|
|
* default. The setopt call will do nothing.
|
|
*
|
|
* @param encoder The encoder handle, must not be NULL
|
|
* @param option The option to set
|
|
* @param value Pointer to the value to set (type depends on the option)
|
|
*
|
|
* @ingroup key
|
|
*/
|
|
void ghostty_key_encoder_setopt(GhosttyKeyEncoder encoder, GhosttyKeyEncoderOption option, const void *value);
|
|
|
|
/**
|
|
* Encode a key event into a terminal escape sequence.
|
|
*
|
|
* Converts a key event into the appropriate terminal escape sequence based on
|
|
* the encoder's current options. The sequence is written to the provided buffer.
|
|
*
|
|
* Not all key events produce output. For example, unmodified modifier keys
|
|
* typically don't generate escape sequences. Check the out_len parameter to
|
|
* determine if any data was written.
|
|
*
|
|
* If the output buffer is too small, this function returns GHOSTTY_OUT_OF_MEMORY
|
|
* and out_len will contain the required buffer size. The caller can then
|
|
* allocate a larger buffer and call the function again.
|
|
*
|
|
* @param encoder The encoder handle, must not be NULL
|
|
* @param event The key event to encode, must not be NULL
|
|
* @param out_buf Buffer to write the encoded sequence to
|
|
* @param out_buf_size Size of the output buffer in bytes
|
|
* @param out_len Pointer to store the number of bytes written (may be NULL)
|
|
* @return GHOSTTY_SUCCESS on success, GHOSTTY_OUT_OF_MEMORY if buffer too small, or other error code
|
|
*
|
|
* @ingroup key
|
|
*/
|
|
GhosttyResult ghostty_key_encoder_encode(GhosttyKeyEncoder encoder, GhosttyKeyEvent event, char *out_buf, size_t out_buf_size, size_t *out_len);
|
|
|
|
/** @} */ // end of key group
|
|
|
|
//-------------------------------------------------------------------
|
|
// OSC Parser
|
|
|
|
/** @defgroup osc OSC Parser
|
|
*
|
|
* OSC (Operating System Command) sequence parser and command handling.
|
|
*
|
|
* The parser operates in a streaming fashion, processing input byte-by-byte
|
|
* to handle OSC sequences that may arrive in fragments across multiple reads.
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* This interface makes it easy to integrate into most environments and avoids
|
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* over-allocating buffers.
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*
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* ## Basic Usage
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*
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* 1. Create a parser instance with ghostty_osc_new()
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* 2. Feed bytes to the parser using ghostty_osc_next()
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* 3. Finalize parsing with ghostty_osc_end() to get the command
|
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* 4. Query command type and extract data using ghostty_osc_command_type()
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* and ghostty_osc_command_data()
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* 5. Free the parser with ghostty_osc_free() when done
|
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*
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* @{
|
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*/
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/**
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* Create a new OSC parser instance.
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*
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* Creates a new OSC (Operating System Command) parser using the provided
|
|
* allocator. The parser must be freed using ghostty_vt_osc_free() when
|
|
* no longer needed.
|
|
*
|
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* @param allocator Pointer to the allocator to use for memory management, or NULL to use the default allocator
|
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* @param parser Pointer to store the created parser handle
|
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* @return GHOSTTY_SUCCESS on success, or an error code on failure
|
|
*/
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GhosttyResult ghostty_osc_new(const GhosttyAllocator *allocator, GhosttyOscParser *parser);
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|
|
|
/**
|
|
* Free an OSC parser instance.
|
|
*
|
|
* Releases all resources associated with the OSC parser. After this call,
|
|
* the parser handle becomes invalid and must not be used.
|
|
*
|
|
* @param parser The parser handle to free (may be NULL)
|
|
*/
|
|
void ghostty_osc_free(GhosttyOscParser parser);
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|
|
|
/**
|
|
* Reset an OSC parser instance to its initial state.
|
|
*
|
|
* Resets the parser state, clearing any partially parsed OSC sequences
|
|
* and returning the parser to its initial state. This is useful for
|
|
* reusing a parser instance or recovering from parse errors.
|
|
*
|
|
* @param parser The parser handle to reset, must not be null.
|
|
*/
|
|
void ghostty_osc_reset(GhosttyOscParser parser);
|
|
|
|
/**
|
|
* Parse the next byte in an OSC sequence.
|
|
*
|
|
* Processes a single byte as part of an OSC sequence. The parser maintains
|
|
* internal state to track the progress through the sequence. Call this
|
|
* function for each byte in the sequence data.
|
|
*
|
|
* When finished pumping the parser with bytes, call ghostty_osc_end
|
|
* to get the final result.
|
|
*
|
|
* @param parser The parser handle, must not be null.
|
|
* @param byte The next byte to parse
|
|
*/
|
|
void ghostty_osc_next(GhosttyOscParser parser, uint8_t byte);
|
|
|
|
/**
|
|
* Finalize OSC parsing and retrieve the parsed command.
|
|
*
|
|
* Call this function after feeding all bytes of an OSC sequence to the parser
|
|
* using ghostty_osc_next() with the exception of the terminating character
|
|
* (ESC or ST). This function finalizes the parsing process and returns the
|
|
* parsed OSC command.
|
|
*
|
|
* The return value is never NULL. Invalid commands will return a command
|
|
* with type GHOSTTY_OSC_COMMAND_INVALID.
|
|
*
|
|
* The terminator parameter specifies the byte that terminated the OSC sequence
|
|
* (typically 0x07 for BEL or 0x5C for ST after ESC). This information is
|
|
* preserved in the parsed command so that responses can use the same terminator
|
|
* format for better compatibility with the calling program. For commands that
|
|
* do not require a response, this parameter is ignored and the resulting
|
|
* command will not retain the terminator information.
|
|
*
|
|
* The returned command handle is valid until the next call to any
|
|
* `ghostty_osc_*` function with the same parser instance with the exception
|
|
* of command introspection functions such as `ghostty_osc_command_type`.
|
|
*
|
|
* @param parser The parser handle, must not be null.
|
|
* @param terminator The terminating byte of the OSC sequence (0x07 for BEL, 0x5C for ST)
|
|
* @return Handle to the parsed OSC command
|
|
*/
|
|
GhosttyOscCommand ghostty_osc_end(GhosttyOscParser parser, uint8_t terminator);
|
|
|
|
/**
|
|
* Get the type of an OSC command.
|
|
*
|
|
* Returns the type identifier for the given OSC command. This can be used
|
|
* to determine what kind of command was parsed and what data might be
|
|
* available from it.
|
|
*
|
|
* @param command The OSC command handle to query (may be NULL)
|
|
* @return The command type, or GHOSTTY_OSC_COMMAND_INVALID if command is NULL
|
|
*/
|
|
GhosttyOscCommandType ghostty_osc_command_type(GhosttyOscCommand command);
|
|
|
|
/**
|
|
* Extract data from an OSC command.
|
|
*
|
|
* Extracts typed data from the given OSC command based on the specified
|
|
* data type. The output pointer must be of the appropriate type for the
|
|
* requested data kind. Valid command types, output types, and memory
|
|
* safety information are documented in the `GhosttyOscCommandData` enum.
|
|
*
|
|
* @param command The OSC command handle to query (may be NULL)
|
|
* @param data The type of data to extract
|
|
* @param out Pointer to store the extracted data (type depends on data parameter)
|
|
* @return true if data extraction was successful, false otherwise
|
|
*/
|
|
bool ghostty_osc_command_data(GhosttyOscCommand command, GhosttyOscCommandData data, void *out);
|
|
|
|
/** @} */ // end of osc group
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* GHOSTTY_VT_H */
|